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Do i need to delete temp files, if my workflow downloads a file?
This topic was automatically generated from Slack. You can find the original thread here.
Do i need to delete temp files, if my workflow downloads a file?
Yes, you should delete temporary files if your workflow downloads a file to the /tmp
directory. The /tmp
directory is stored on the virtual machine that runs your workflow, and while files may remain across executions, they can also be cleaned up by the system at any time. To avoid any potential issues with leftover files affecting your workflow, it’s recommended to clean up files after use. You can use the tmp-promise
package for managing temporary files, including cleanup, or delete the files manually. For more details, please refer to the Managing /tmp
across workflow runs documentation.
I’m struggling with how to delete the tmp file after running my script It only runs once a day, not sure if the tmp file deletes automatically?
It sounds like you’re concerned about managing temporary files created during your workflow runs. While the /tmp
directory is specific to the execution environment and files may be automatically cleaned up when the environment is recycled, it’s a good practice to manually manage and delete these files to ensure they don’t interfere with subsequent executions of your workflow. Here’s how you can delete a temporary file in your Pipedream workflow: import fs from "fs"; export default defineComponent({ async run({ steps, $ }) { // Replace '/tmp/your-file' with the path to your specific temporary file return await fs.promises.unlink('/tmp/your-file'); } });
This code snippet uses the fs
module to delete a file from the /tmp
directory. Make sure to replace '/tmp/your-file'
with the actual path to your temporary file. Remember, while files in /tmp
may persist between executions, they can also be automatically deleted when the execution environment is recycled. However, explicitly deleting these files as shown above is a reliable way to manage your temporary files and ensure they don’t accumulate or affect your workflow’s operation. For more details on working with files in Pipedream, including managing the /tmp
directory, you can refer to the documentation here.
the file is a .mp4 file that when downloaded is called tmpVideoFile when running the above code i get
Error
ENOENT: no such file or directory, unlink ‘/tmp/tmpVideoFile.mp4’
but when running the list files in tmp script i get:
$return_value
[3]
0: __pdg__
1: __pds__
2: tmpVideoFile
Not sure what im doing wrong
Based on your description, it seems like you’re encountering an issue with a file operation in a Pipedream workflow, specifically with handling a .mp4
file named tmpVideoFile
in the /tmp
directory. The error ENOENT: no such file or directory, unlink '/tmp/tmpVideoFile.mp4'
suggests that the operation to unlink (delete) the file is failing because the file path might not be correctly specified or the file does not exist at the time of the operation. However, from the list files operation, it appears that tmpVideoFile
does exist in the /tmp
directory, but it’s important to note that the file extension .mp4
is missing in the list you provided. This discrepancy in file naming (with and without the .mp4
extension) could be the source of the issue. To address this problem, ensure that you are consistent with the use of the file name and its extension throughout your workflow. If you are trying to unlink or perform operations on tmpVideoFile.mp4
, make sure that the file is indeed saved with the .mp4
extension in the /tmp
directory. Here’s an example of how you might download a .mp4
file to the /tmp
directory and then read it, ensuring the file name and extension are consistent: import fs from "fs"; import got from "got"; import stream from "stream"; import { promisify } from "util"; const pipeline = promisify(stream.pipeline); // Example of downloading a .mp4 file to /tmp directory await pipeline( got.stream("URL_OF_YOUR_MP4_FILE"), fs.createWriteStream(`/tmp/tmpVideoFile.mp4`) ); // Ensure the file exists before attempting to unlink or use it if (fs.existsSync('/tmp/tmpVideoFile.mp4')) { // File operation (e.g., read or unlink) goes here const fileContent = fs.readFileSync('/tmp/tmpVideoFile.mp4'); // If you need to unlink (delete) the file // fs.unlinkSync('/tmp/tmpVideoFile.mp4'); } else { console.log('File does not exist.'); }
Make sure to replace "URL_OF_YOUR_MP4_FILE"
with the actual URL of the .mp4
file you wish to download. This example checks if the file exists before attempting to read or unlink it, which can help avoid the `
nah, the /tmp
folder gets cleared after some time, shouldn’t be an issue if you’re running once a day
Unless you get a Out of Memory error or something similar